<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../react18/react.development.js"></script>
    <script src="../react18/react-dom.development.js"></script>
    <script src="../react18/babel.min.js"></script>
</head>
<body>
    <div id="app"></div>
    <script type="text/babel">
        function Child(props){
            console.log(props);
            const {count,setCount}=props;
            return <div>
                <h2>Child组件:{count}</h2>
                <button onClick={
                    ()=>{
                        setCount(x=>x+1)
                    }
                }>
                    按钮
                    </button>
                </div>

                
        }

        function App() {
        const [count, setCount] = React.useState(0);
        return (
          <div>
            <h1>App组件</h1>
            <hr />
            <Child count={count} setCount={setCount} />
          </div>
        );}
        ReactDOM.createRoot(document.getElementById("app")).render(<App />);
    </script>
</body>
</html>